Home / 142,787.20-197,047.92-79,126.24

Finding the Fourth Proportional to 142,787.20, 197,047.92 and 79,126.24

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Solution

The fourth proportional to 142,787.20, 197,047.92 and 79,126.24 is: 109,195.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,787.20 : 197,047.92 = 79,126.24 : x
  2. Step 2: Convert to fraction form
    142,787.20/197,047.92 = 79,126.24/x
  3. Step 3: Cross multiply
    142,787.20x = 197,047.92 × 79,126.24
  4. Step 4: Simplify right side
    142,787.20x = 15,591,661,009.42
  5. Step 5: Solve for x
    x = 15,591,661,009.42/142,787.20
  6. Step 6: Final answer
    x = 109,195.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.